Structural engineering of bimetallic selenides for high-energy density sodium-ion half/full batteries

The shortage of high-capacity anode materials with long cycling stability is the main roadblock to the development of sodium-ion batteries (SIBs). The advantages of transition metal selenides are high theoretical capacity, safety and ease of design, which gradually make them potential substitute materials for the anodes of a new generation of SIBs. However, the low intrinsic conductivity of transition metal selenides and the serious powderization during charge and discharge processes restrict their rate performance and cycling stability in SIBs. Herein, bimetallic selenide ZnSe/MoSe